Search our library of homework questions

Top answers

All subjects

All levels

How do I differentiate (cosx)/x^2

Label function: y=(cosx)/x²Recall quotient rule for functions of form h(x)=f(x)/g(x) given by,h'(x)=(f'(x)g(x)-f(x)g'(x))/(g(x))²Split original equation into f(x)=cosx and g(x)=x

Answered by Caelen D. • Maths tutor

14400 Views

You are given the equation of the line y=x^3+x^2-2x. Find the stationary points of the curve and determine the maximum and minimum points and find where it crosses the x-axis and thus sketch the graph

First differentiate the equation to find the equation of the tangents in terms of x. From this set dy/dx=0 because this is the stationary points, from this use the quadratic equation to find the value of ...

Answered by Oliver H. • Maths tutor

3416 Views

Why does excessive consumption of alcohol lead to negative externalities ?

The private consumer does not consider the effect that their excessive alcohol consumption has on a third party and so the private benefit outweighs the social benefit. There is a welfare loss to society ...

Answered by Kira E. • Economics tutor

2194 Views

What happened during a sacrifice before the animal was killed? [5]

Before an animal was killed, the sacrificial animal would be driven along a set out route, however only Athenian citizens were allowed onto the Acropolis. A sacrifice was a way of showing respect to the G...

Answered by Alice P. • Classical Civilisation tutor

1870 Views

Describe and explain the physiological changes that occur in the body if the core body temperature is at 38 degrees celsius.

38 degrees Celsius is higher than the necessary core body temperature of 37 degrees. This is detected by the hypothalamus to reduce the temperature through a negative feedback system.The changes brought a...

Answered by Kd B. • Biology tutor

2814 Views